A211140 - cp's OEIS frontend

A211140 Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant n.

n	a(n)
0	1
1	20
2	92
3	176
4	364
5	408
6	880
7	704
8	1420
9	1412
10	2088
11	1552
12	3760
13	2104
14	3808
15	4096
16	5388
17	3400
18	7660
19	4208
20	9160
21	7392
22	8464
23	5952
24	15344
25	8428
26	11656
27	11584
28	16608
29	9208
30	22752
31	10464
32	21132
33	16928
34	19192
35	17952

[1, 20, 92, 176, 364, 408, 880, 704, 1420, 1412, 2088, 1552, 3760, 2104, 3808, 4096, 5388, 3400, 7660, 4208, 9160, 7392, 8464, 5952, 15344, 8428, 11656, 11584, 16608, 9208, 22752, 10464, 21132, 16928, 19192, 17952]

cp's OEIS Frontend

A211140 Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant n.

Table of values

List of values